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First, let's consider the cost. The Casper mattress is surprisingly affordable, making it a good choice for people who need extra spinal support. Casper also offers a 100-night return policy. This means that you can order a Casper Mattress and return it if it isn't what you want. The covers are also made from recycled plastic bottles. Although it doesn't have a firmness rating the customers say that it provides exceptional support and is comfortable to use.